1. His answer was to lift the vessel out of the water by making it ride on a cushion of air, no more than one or two feet thick. This is done by a great number of ring-shaped air jets on the bottom of the craft.
    他的解决办法是把船体提离水面，让船在一个气垫上行驶，气垫只有一两英尺厚。船底装上大量环状喷气嘴以实现这一目的。

2. He had spotted a tiny bottle at the bottom of my case and he pounced on it with delight.
    他在我的箱底发现了一只小瓶，高兴地一把抓了起来。

3. And we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
    我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

4. A tiny asterisk conducted me to a footnote at the bottom of the page.
    一个小星号把我引向一个脚注。

5. A sound made by taping on the hull of a ship will be reflected from the sea bottom.
    轻叩船体发出的声响会从海底反射回来,

6. A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
    通过敲击空船发出的声音将会从海底反射回来。

7. A tiny asterisk conducted me to a footnote at the bottom of the page.
    一个小小的星形符号把我的目光引到了那页底部一个说明上。

8. After this it took me a month to shape it to something like the bottom of a boat, so that it might swim upright.
    此后又用了一个月的时间才把树干砍得有点像船底，使它能稳稳地浮在水上。

9. A second characteristic is based on "consensus opinion" and "bottom-up direction".
    第二个特点的基础是"一致共识"及"由下而上"。

10. Across the playground, a girl falls off the bottom of the slide and bursts into tears.
    操场的对面，一个女孩从滑梯的底端滑出来，呜呜地哭了起来。